/*
 * NOTICE: THE FILE HAS BEEN MODIFIED TO SUIT THE NEEDS OF THE PROJECT.
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.robobinding.internal.java_beans;

/**
 * Describes a bean's global information.
 */
public class BeanDescriptor extends FeatureDescriptor {

	private Class<?> beanClass;

	private Class<?> customizerClass;

	/**
	 * <p>
	 * Constructs an instance with the bean's {@link Class} and a customizer
	 * {@link Class}. The descriptor's {@link #getName()} is set as the
	 * unqualified name of the <code>beanClass</code>.
	 * </p>
	 * 
	 * @param beanClass
	 *            The bean's Class.
	 * @param customizerClass
	 *            The bean's customizer Class.
	 */
	public BeanDescriptor(Class<?> beanClass, Class<?> customizerClass) {
		if (beanClass == null) {
			throw new NullPointerException();
		}
		setName(getShortClassName(beanClass));
		this.beanClass = beanClass;
		this.customizerClass = customizerClass;
	}

	/**
	 * <p>
	 * Constructs an instance with the bean's {@link Class}. The descriptor's
	 * {@link #getName()} is set as the unqualified name of the
	 * <code>beanClass</code>.
	 * </p>
	 * 
	 * @param beanClass
	 *            The bean's Class.
	 */
	public BeanDescriptor(Class<?> beanClass) {
		this(beanClass, null);
	}

	/**
	 * <p>
	 * Gets the bean's customizer {@link Class}.
	 * </p>
	 * 
	 * @return A {@link Class} instance or <code>null</code>.
	 */
	public Class<?> getCustomizerClass() {
		return customizerClass;
	}

	/**
	 * <p>
	 * Gets the bean's {@link Class}.
	 * </p>
	 * 
	 * @return A {@link Class} instance.
	 */
	public Class<?> getBeanClass() {
		return beanClass;
	}

	/**
	 * <p>
	 * Utility method for getting the unqualified name of a {@link Class}.
	 * </p>
	 * 
	 * @param leguminaClass
	 *            The Class to get the name from.
	 * @return A String instance or <code>null</code>.
	 */
	private String getShortClassName(Class<?> leguminaClass) {
		if (leguminaClass == null) {
			return null;
		}
		String beanClassName = leguminaClass.getName();
		int lastIndex = beanClassName.lastIndexOf("."); //$NON-NLS-1$
		return (lastIndex == -1) ? beanClassName : beanClassName.substring(lastIndex + 1);
	}

}
